BRUSSELS/KIEV, Dec 7 (Reuters) - The European Union is putting its credibility and reputation at risk by letting internal political wrangling stall a promised easing of visa requirements for Ukraine and Georgia, the head of the European Council said. In a letter sent to European Parliament President Martin Schulz on Tuesday and seen by Reuters, Donald Tusk urged the legislature to compromise with national governments to unblock visa liberalisation.

Ukraine feels let down by the European Union for not keeping to a promise to give its citizens visa-free travel in the bloc, senior Ukrainian officials said. The comments, made by two senior officials in interviews with Reuters, were unusually outspoken and cut through the public displays of bonhomie shown at a Ukraine-EU summit in Brussels in November.